Gilead Sciences, Inc. (Gilead) is a research-based biopharmaceutical company that discovers, develops and commercializes medicines. Gilead�s primary areas of focus include human immunodeficiency virus (HIV)/AIDS, liver diseases, such as hepatitis B and C and cardiovascular/metabolic and respiratory conditions. The Company has operations in North America, Europe and Asia Pacific. The Company�s products include Atripla, Truvada, Viread, Complera/Eviplera, Emtriva, Hepsera, Letairis, Ranexa, Lexiscan/Rapiscan, AmBisome, Vistide, Macugen, Cayston and Tamiflu. In January 2012, the Company acquired Pharmasset, Inc. On February 8, 2013, its subsidiary, acquired YM BioSciences Inc.